CN102057137A - Annular flow distribution control of lubrication oil between concentric rotary shafts - Google Patents
Annular flow distribution control of lubrication oil between concentric rotary shafts Download PDFInfo
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- CN102057137A CN102057137A CN2008801297338A CN200880129733A CN102057137A CN 102057137 A CN102057137 A CN 102057137A CN 2008801297338 A CN2008801297338 A CN 2008801297338A CN 200880129733 A CN200880129733 A CN 200880129733A CN 102057137 A CN102057137 A CN 102057137A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16N—LUBRICATING
- F16N7/00—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated
- F16N7/36—Arrangements for supplying oil or unspecified lubricant from a stationary reservoir or the equivalent in or on the machine or member to be lubricated with feed by pumping action of the member to be lubricated or of a shaft of the machine; Centrifugal lubrication
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/06—Sliding surface mainly made of metal
- F16C33/10—Construction relative to lubrication
- F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
- F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
- F16C33/107—Grooves for generating pressure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0467—Elements of gearings to be lubricated, cooled or heated
- F16H57/0469—Bearings or seals
- F16H57/0471—Bearing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0493—Gearings with spur or bevel gears
- F16H57/0494—Gearings with spur or bevel gears with variable gear ratio or for reversing rotary motion
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- General Details Of Gearings (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
A concentric cylinder drive assembly (1 ) used for the transmission of power in industrial machinery is disclosed. More specifically, a concentric drive assembly (1 ) with a hollow outer cylinder (5) having an internal surface with a bi-directional surface lay; an inner cylinder (3) having an external surface with a unidirectional surface lay oriented at a predetermined angle (f) along the length of the cylinder; an annular channel established between the outer and inner cylinders having a predetermined gap (7); and a lubrication oil that substantially fills the annular channel is presented.
Description
Technical field
The present invention relates generally to have the industrial machinery of internal-combustion engine.More specifically, the present invention relates to control be used to drive agricultural, building and forestry tractor and equipment and with the coaxial running shaft of mechanical implement, instrument or the parts of tractor and equipment integration one between the circulation of lubricant oil distribute.
Background technique
Traditional industrial machinery generally all is equipped with and can provides drive main spindle and vehicle wheel component by the layout of power output shaft and coupling or such as the outside appurtenances of packer, crops reaper etc. or the necessary power of internal-combustion engine of utensil.In many machineries, has the transmission of the assembly realization power of coaxial rotating cylinder or axle by use.In in such coaxial drum driving assembly, being necessary be formed at cylinder and outside provide lubricated in the annular slot between the cylinder.Like this lubricated normally with the form of the Lubricants of the hollow supply by interior cylinder, such as oil.Allow lubricant oil to flow to annular slot along the hole that whole length is got out on the cylindrical wall of interior cylinder from the hollow of cylinder.Yet the existence in these holes not only increases manufacture cost but also weakens the integrity of interior cylinder, cylinder fatigue and premature failure in therefore causing.Cause the uneven distribution of oil in whole annular slot by directly in annular slot, supply with oil from an end of coaxial drum driving assembly to attempt reducing these Kong Zehui, thereby quicken the wearing and tearing between the rotating drum.Therefore, in industry, when the concentric shafts of rotation is used for the power delivery of industrial machinery, need provide a kind of device of the oil that can in the annular slot between the coaxial cylinder of rotation, evenly distribute, and its economic and can reduce wearing and tearing too early and lose efficacy possibility.
Summary of the invention
In one aspect of the invention, disclose a kind of coaxial drum driving assembly that in industrial machinery, is used for power delivery.This Driven by Coaxial assembly can comprise: the outer cylinder of hollow, and it comprises the internal surface with two-way surface texture; Interior cylinder, it comprises having along drum length at a predetermined angle
The outer surface of the unidirectional surface texture of orientation; Circular groove, it is formed between the described outer and inner cylinder and has predetermined gap; And lubricant oil, it is filled in the annular slot substantially.Cylinder can rotate along a direction in described, thereby makes lubricating oil be subjected to the influence of laminar flow environment.
In another embodiment of the present invention, the unidirectional surface texture of interior cylinder can be the angle that has greater than 90 degree
Back to texture, have less than 90 the degree angle
Forward texture, perhaps have about 90 the degree angles
The Vertical direction texture.
The outer surface of the internal surface of described outer cylinder and described interior cylinder can have about 0.5 micron average surface roughness (R to about 5.0 micrometer ranges
a).Average surface roughness (the R of the internal surface of outer cylinder
a) preferably between about 1.0 microns and about 1.6 microns, choose, and the outer surface of interior cylinder is preferably chosen between about 0.8 micron and about 2.5 microns.
Aspect another, the coaxial drum driving assembly that is used for power delivery can be further divided into front and rear of the present invention.Substantially pass the outer cylinder of hollow and the interior cylinder of front and rear, the outer cylinder of this hollow has the internal surface of two-way surface texture, and cylinder has at predetermined angle in this
The outer surface of the unidirectional surface texture of last orientation.In this embodiment, the annular slot that is formed between the internal and external cylinder is filled with lubricant oil, and this lubricant oil has the tendency that is restricted to laminar flow when interior cylinder rotates.
The lubricant oil that is distributed in front and rear can be according to predetermined forward direction/back to (D
F/ D
R) ratio determines.Work as D
F/ D
RBe about 0.7 o'clock, the angle of the unidirectional surface texture of interior cylinder
Can be 90 degree.When outer cylinder rotates and D in the direction similar to interior cylinder rotation
F/ D
RIn the time of between about 0.3 to about 0.5, the angle of the unidirectional surface texture of interior cylinder
Can be less than 90 degree.
The description that provides from here can clearer and more definite application of the present invention.Should be understood that specification and concrete example all are for illustrative purposes, can not limit the scope of the invention.
Description of drawings
Accompanying drawing described herein only is to be used for exemplary explanation, all can not limit the scope of the invention on any way.
Fig. 1 is the sectional drawing of coaxial drum driving assembly;
Fig. 2 A illustrates with the schematic representation of a kind of intersection line surface structure as bidirectional texture; And Fig. 2 B is that diagram has the angle of spending greater than 90 with a kind of unidirectional surface structure conduct
The schematic representation of unidirectional texture.
Embodiment
Below description only discloses essence of the present invention and never is in order to limit the present invention or its enforcement or use.Be to be understood that it is by specific descriptions and accompanying drawing, corresponding label is represented similar or corresponding parts and feature.
One embodiment of the present of invention provide a kind of and are delivered to power such as the axle and the wheel of the industrial machinery of tractor or are delivered to such as the integration tool assembly of packer or crops reaper or the coaxial drum driving assembly of utensil.Coaxial according to an embodiment of the invention drum driving assembly example shown in Fig. 1.The basic element of character of coaxial drum driving assembly 1 can comprise outer cylinder 5 and interior cylinder 3, the outer surface of interior cylinder 3 and outside form annular gap 7 between the internal surface of cylinder 5.Integration by power output shaft and coupling arrangement, from motor or motor by coaxial drum driving assembly 1 transmitted power to the main shaft and the vehicle wheel component of tractor or drive outside appurtenances and utensil, such as packer, crops reaper etc., there is multiple variation pattern.
For example, interior cylinder 3 can one be connected to power source, such as the internal-combustion engine or the motor that drive the cylinder rotation.In this example, outer cylinder 5 can be fixed.Miscellaneous part allows the energy is transferred to these assemblies with the integration of the interior cylinder 3 of rotation.In another example, outer cylinder 5 can one be connected to power source, makes that outer cylinder 5 can rotate on either direction.Cylinder 3 in the torque that produces is delivered to by one group of gear and coupling subsequently.Other assemblies allow the energy is transferred to these assemblies with the integration of the interior cylinder 3 of rotation.
Lubricating film or layer can add annular gap 7 to by near the import 14 the end that is positioned at coaxial drum driving assembly 1.Lubricating film or layer be the form of oily or other Lubricantss that those skilled in the art knew in lubricated field normally.Lubricated helping by reducing life-span or the long life that wearing and tearing that can take place between interior cylinder 3 and the outer cylinder 5 and the amount of tearing are improved coaxial drum driving assembly.Persons skilled in the art can be recognized and can use other modes that lubricant oil is added in the annular gap.For example, interior cylinder 3 can be hollow, whole filled circles tubular wall or outside put be drilled with connect in a plurality of holes of the inner and annular gap of the hollow of cylinder 3.These holes provide and allow oil from the hollow path that enters annular gap 7 of cylinder.
In one embodiment of the invention, by on the internal surface that uses outer cylinder 5 and the predetermined surface structure on the outer surface of interior cylinder 3, can control along the oil content cloth of the entire length of annular gap 7.This embodiment's of the present invention a benefit is: interior cylinder 3 also can be solid rather than hollow.Use solid in cylinder 3 reduce manufacture costs and because the potential fatigue problem that stress caused of on the cylindrical wall of bored roll, holing and producing.
Along with lubricating oil flows, can on the surface of each coaxial cylinder, form boundary layer in annular gap 7.The thickness of boundary layer is decided by multiple factor, such as the structure of oil viscosity, cylinder surface and the speed of flow of fluid.The influence of the sticky shearing power that cylinder 3 motions produced in this boundary layer was subjected to rotating.This shearing force can cause laminar flow or eddy current, and the balance between its reflection viscosity and the internal stress also is related to flow stability.Expectation can keep flowing of laminar region under the situation that the minimum between the oil reservoir is mixed, lubricated to improve.The beginning of eddy current causes the mixing of adjacent oil reservoir and may cause the formation of circle vortex and the fluctuation of flow velocity, therefore reduce lubricating efficiency.
The structure of the outer surface of interior cylinder 3 and the internal surface of outer cylinder 5 all can be set to have to a certain degree roughness and the directed profile of relative this roughness, be called surface " texture ".Roughness is that (for example, what Feng Hegu) small scale on changed measures, and surface texture is meant the existing line of direction of Feng Hegu at the height of surface physics structure.Roughness is undesirable characteristic sometimes, because it may produce too much friction, wearing and tearing, resistance and fatigue between two surfaces that contact with each other.Yet in having lubricated oil condition, roughness is favourable sometimes, because its texture can allow the surface to catch oiling agent and stop surface binding together.Roughness generally is to calculate and be recorded as along the mean value (R of the distance of the peak and valley of central line measurement by measuring of recording of surface measurement technology
a).
Surface texture is generally by the type of the machine operations of selecting with finish mach direction and produce.Surface texture can be two-way or unidirectional.Shown in Fig. 2 A, bidirectional texture is meant the profile line of intersection line type pattern, that is, and and processing line.This pattern can be by processing generation from two different direction to cylinder surface.For example, lathe can be used for making roller surface the other way around, thereby forms bidirectional texture.Unidirectional texture shown in Fig. 2 B shows profile or the processing line along a direction.According to how cylinder surface being processed, these profile lines can form different angles with respect to drum length
The angle of 90 degree
The profile line of representing unidirectional texture is perpendicular to the straight line parallel with drum length.Have greater than the unidirectional texture of profile line of the angles of 90 degree and can think (the seeing Fig. 2 B) of forward direction, and have texture less than the profile line of the angles of 90 degree can be meant the back to unidirectional texture.The direction of texture may influence the flow direction that is positioned at oil wherein and make two-way surface texture and can reduce texture any influence to the oil that flows therein on direction.
In one embodiment of the invention, the internal surface of outer cylinder 5 is processed as and presents bidirectional texture.The roughness on surface can be from R
aAbout 0.1 micron is smooth relatively to R
aChange in about 5.0 microns very coarse scope.Yet, for this surface, preferably R
aArrive in about 1.6 microns scope at about 1.0 microns.Though bidirectional texture can't make the deviation in driction of oil flow, its surface roughness does not allow oil with surface adsorption or combine yet, and therefore allows efficiently to lubricate.
In one embodiment of the invention, the outer surface of interior cylinder 3 is processed as and presents unidirectional texture.The roughness of this cylinder surface can be from R
aAbout 0.1 micron is smooth relatively to R
aChange in about 5.0 microns very coarse scope.Yet, for this surface, preferably R
aArrive in about 2.5 microns scope at about 0.8 micron.In order to reduce the cost relevant, preferably more coarse surface with machining operation.The angle relevant with unidirectional texture
May influence the direction that oil flows therein.
In some applications, can expect that more oil flows to an end of coaxial drum driving assembly, this coaxial drum assembly integrates with needing lubricated assembly.Please refer to Fig. 1, coaxial drum driving assembly 1 can be further divided into front portion 10 and rear portion 12, and each part is represented about 1/2 coaxial drum driving assembly.Can be distributed in front portion and the ratio (D that is distributed in the oil at rear portion according to the number and the function of the assembly that is integrated into front portion 10 and rear portion 12
F/ D
R) can between about 0.1 to about 1.0, change.According to predetermined ratio, can select the angle of unidirectional texture
Oil is guided different piece to coaxial drum driving assembly 1.For example, in order to obtain the distribution of oil, the angle of the unidirectional texture on the outer surface of interior cylinder 3 according to ratio 0.7
Can be about 90 degree.
The technology that can utilize persons skilled in the art to know is processed the inside of outer cylinder 5 and the outside of interior cylinder 3.The example of these technology includes, but not limited to honing, grinding, electropolishing, lappingout, polishing, casting, cold rolling, polishing, hinge processing, electro discharge machining, broaching, extruding and milling.
The annular gap 7 that forms between the outer surface of the internal surface of cylinder 5 and interior cylinder 3 can change to about 5.0mm from about 0.5mm outside, preferably changes from about 2.5 to 3.5mm.This annular gap along the whole length of coaxial drum driving assembly constantly to reduce the possibility that driven unit works as pump and to impel the laminar flow of oil to spread all over whole annular gap 7.
Lubricant oil can be any liquid known to the those skilled in the art in lubricated field.The example of Lubricants includes, but not limited to many grades engine oil, synthetic engine oil, mineral oil and Poly alpha Olefins (PAO) (polyalphaolefins).Lubricant oil can also comprise other bells and whistleses, such as HMW water-thickening agent and viscosity index improver.
Provide object lesson below with explanation the present invention, can not think that it limits the scope of the invention.
Example 1: infrastest setting
Coaxial drum driving assembly 1 as shown in Figure 1 be used to determine under target or purpose ratio are 0.7 different situations, to be distributed in anterior 10 and rear portion 12 between the ratio (D of oil
F/ D
R).Outer cylinder 5 has the internal diameter of 29mm, and this internal diameter has 1.6 microns inside surface roughness (R
a) and the unidirectional surface texture of forward direction.Outer cylinder 5 is rotating with different speed with counterclockwise (with the negative velocity value representation) direction clockwise.Interior cylinder 3 has the external diameter of 24mm, has therefore formed the annular gap 7 of 2.5mm.Interior cylinder 3 has 4.33 microns average surface roughness (R
a) and back to unidirectional surface texture.Interior cylinder is in the clockwise direction with different speed rotations.Inlet at an end that is positioned at coaxial drum driving assembly 1 provides oil to annular gap 7.The flow rate of oil pressure and oil changes in test.The temperature of oil remains on 30 degrees centigrade.The oil mass that is distributed in front portion 10 and rear portion 12 is collected and measured.Calculate the ratio (D that is distributed in the oil mass in front portion 10 and the rear portion 12 then
F/ D
R).
Various parameters and situation change in whole experiment, D
F/ D
RValue be presented in the following table 1.Relating to D
F/ D
RSeldom observe near target rate 0.7 in all experimental statuss of ratio.This way of example shows, comprising the outer cylinder 5 with the unidirectional surface texture of forward direction and having the back is not no matter how outer drum speed (size and Orientation), interior drum speed, oil pressure and oily flow rate all can satisfy D to the coaxial drum driving assembly 1 of the interior cylinder 3 of unidirectional surface texture
F/ D
RRatio is about 0.7 satisfactory combination.In fact, the D that establishes in this experiment
F/ D
RWide range, for example 0.97 (row 1-3) to 1.95 (row 1-5), no matter demonstrate how parameter changes in this experiment, this combination can not approach any concrete ratio.
Table 1
| 1-1 | 1-2 | 1-3 | 1-4 | 1-5 | 1-6 | |
| The parameter that changes | ||||||
| Outer drum speed (rpm) | 2644 | -2424 | 0 | 2200 | 2200 | 900 |
| Interior drum speed (rpm) | 2200 | 2200 | 2200 | 2200 | 2200 | 900 |
| The oil pressure of inlet (bar) | 3 | 3 | 3 | 1 | 0.6 | 0.3 |
| The flow rate of the oil of inlet (ml/s) | 160 | 160 | 160 | 75 | 55 | 20 |
| The output that records | ||||||
| The ratio (target～0.7) at front portion and rear portion | 1.42 | 1.44 | 0.97 | 1.77 | 1.95 | 1.51 |
Example 2: the surface roughness that reduces
Be about 0.8 micron the average surface roughness (R that reduces for having
a) interior cylinder 3 be reset at the experiment setting of describing in the experiment 1.Parameter and state change in whole experiment, consequent distribution ratio D
F/ D
RValue be presented in the following table 2.
Table 2
| 2-1 | 2-2 | 2-3 | 2-4 | 2-5 | 2-6 | |
| The parameter that changes | ||||||
| Outer drum speed (rpm) | 2644 | -2424 | 0 | 2200 | 2200 | 900 |
| Interior drum speed (rpm) | 2200 | 2200 | 2200 | 2200 | 2200 | 900 |
| The oil pressure of inlet (bar) | 3 | 3 | 3 | 1 | 0.6 | 0.3 |
| The flow rate of the oil of inlet (ml/s) | 160 | 160 | 160 | 75 | 55 | 20 |
| The output that records | ||||||
| The ratio (target～0.7) at front portion and rear portion | 1.09 | 0.79 | 0.81 | 1.57 | 1.54 | 1.60 |
Relating to D
F/ D
RSeldom observe near target rate 0.7 in most of experimental statuss of ratio.Have only when outer cylinder to rotate counterclockwise (row 2-2) or keep static (row 2-3), just near target rate.This way of example shows comprises the outer cylinder 5 with the unidirectional surface texture of forward direction and comprises that having the back is not outer drum speed (size and Orientation), interior drum speed, oil pressure and the oily flow rate D that how all can satisfy no matter to the coaxial drum driving assembly 1 of the interior cylinder 3 of unidirectional surface texture
F/ D
RRatio is about 0.7 satisfactory combination.In fact the scope of the ratio that obtains from 0.79 (row 2-2) to 1.60 (row 2-6) shows how the parameter in no matter testing changes, and this combination does not all approach concrete ratio.Demonstrate the mean roughness R that reduces cylinder
aOn near target rate, less influence is only arranged in the ability that promotes driven unit.
Example 3: the bidirectional texture on the outer cylinder
For having two-way surface texture and about 1.2 microns average surface roughness (R
a) outer cylinder 5 be reset at the experiment setting of describing in the experiment 1.Interior cylinder 3 has the back to, unidirectional surface texture and average surface roughness (R
a) about 0.8 micron.Parameter and situation change in whole experiment, consequent distribution ratio D
F/ D
RValue be presented in the following table 3.
Table 3
| 3-1 | 3-2 | 3-3 | 3-4 | 3-5 | 3-6 | 3-7 | |
| The parameter that changes | |||||||
| Outer drum speed (rpm) | 2644 | -2424 | 0 | 2200 | 2200 | 900 | 0 |
| Interior drum speed (rpm) | 2200 | 2200 | 2200 | 2200 | 2200 | 900 | 900 |
| The oil pressure of inlet (bar) | 3 | 3 | 3 | 1 | 0.6 | 0.3 | 1 |
| The flow rate of the oil of inlet (ml/s) | 160 | 160 | 160 | 75 | 55 | 20 | 60 |
| The output that records | |||||||
| The ratio (target～0.7) at front portion and rear portion | 0.34 | 1.06 | 0.53 | 0.51 | 0.40 | 0.30 | 0.58 |
Relating to D
F/ D
RSeldom observe near target rate 0.7 under most of experimental statuss of ratio.Only be in row 3-7 near target rate, its China and foreign countries' cylinder is with the rotation of relatively low speed.This way of example shows comprises the outer cylinder 5 with two surface textures and comprises having the back is not no matter how outer drum speed (size and Orientation), interior drum speed, oil pressure and oily flow rate all satisfy about 0.7 D to the coaxial drum driving assembly 1 of the interior cylinder 3 of unidirectional surface texture
F/ D
RThe satisfactory combination of ratio.Yet, under most experimental status, find that this is in conjunction with approaching about D of 0.3 to 0.5
F/ D
RRatio.Has only when on outer cylinder (is listed as 3-2) in the counterclockwise direction, moving D
F/ D
RRatio is not approaching.Therefore the bidirectional texture on the internal surface of outer cylinder 5 can be used for combining to guide oil content cloth to trend towards 0.3 to 0.5 ratio to unidirectional texture with the back of outer surface of interior cylinder 3.Bidirectional texture on the internal surface of the outer cylinder 5 of this way of example shows has reduced should any influence of surface on the oil flow direction.Further, the direction of oil flow may be affected by the unidirectional texture on the outer surface of cylinder in utilizing.
Example 4-has the angle of about 90 degree
Unidirectional texture
For having two-way surface texture and about 1.2 microns average surface roughness (R
a) outer cylinder 5 be reset at the experiment setting of describing in the experiment 1.Interior cylinder 3 has the angle that is about 90 degree
The unidirectional surface texture of Vertical direction and be about 0.8 micron average surface roughness (R
a).Parameter and situation change in whole experiment, consequent distribution ratio D
F/ D
RValue be presented in the following table 4.In two row, row 4-5 and row 4-6, the oil temperature is elevated to 60 degrees centigrade from 30 degrees centigrade.
Table 4
| 4-1 | 4-2 | 4-3 | 4-4 | 4-5 | 4-6 | |
| The parameter that changes | ||||||
| Outer drum speed (rpm) | 2644 | -2424 | 0 | 2200 | 2200 | 900 |
| Interior drum speed (rpm) | 2200 | 2200 | 2200 | 2200 | 2200 | 900 |
| The oil pressure of inlet (bar) | 2.1 | 2.1 | 2.1 | 1.7 | 1.7 | 1.7 |
| The flow rate of the oil of inlet (ml/s) | 140 | 140 | 140 | 120 | 175 | 70 |
| The output that records | ||||||
| The ratio (target～0.7) at front portion and rear portion | 0.65 | 0.82 | 0.78 | 0.7 | 0.6 | 0.8 |
Under all experimental statuss, find the D that records
F/ D
RRatio is near target rate 0.7.Therefore this way of example shows has the outer cylinder of two-way surface texture and has the angle of about 90 degree
The interior cylinder of the unidirectional surface texture of Vertical direction be the satisfactory combination how flow rate of no matter outer drum speed (size and Orientation), interior drum speed, oil pressure and oil all satisfies target rate about 0.7.
The surface roughness that experiment 5 increases
For having about 2.5 microns average surface roughness (R
a) interior cylinder 3 be reset at the experiment setting of describing in the experiment 4.Parameter and situation change in whole experiment, consequent distribution ratio D
F/ D
RValue be presented in the following table 5.
Table 5
| 5-1 | 5-2 | 5-3 | 5-4 | |
| The parameter that changes | ||||
| Outer drum speed (rpm) | 2644 | 2200 | -2424 | 0 |
| Interior drum speed (rpm) | 2200 | 2200 | 2200 | 2200 |
| The oil pressure of inlet (bar) | 2.1 | 2.1 | 2.1 | 2.1 |
| The flow rate of the oil of inlet (ml/s) | 140 | 140 | 140 | 140 |
| The output that records | ||||
| The ratio (target～0.7) at front portion and rear portion | 0.69 | 0.70 | 0.85 | 0.83 |
Under all experimental statuss that relate to, find the D that records
F/ D
RRatio is near target rate 0.7.Therefore this way of example shows has the outer cylinder of two-way surface texture and has the angle of about 90 degree
The interior cylinder of the unidirectional surface texture of Vertical direction be the satisfactory combination how flow rate of no matter outer drum speed (size and Orientation), interior drum speed, oil pressure and oil all satisfies target rate about 0.7.The surface roughness of interior cylinder can increase and not observe has any influence to obtainable target rate.
Persons skilled in the art will be appreciated that and can under the condition that does not depart from the claim restricted portion the present invention be made amendment and change from the description of front.The test method of describing in example is only represented a kind of method that need can obtain test result.
Claims (21)
1. coaxial drum driving assembly that is used in the industrial machinery through-put power, described Driven by Coaxial assembly comprises:
The outer cylinder of one hollow, it comprises the internal surface with two-way surface texture;
Cylinder in one, it comprises having along the length direction of described cylinder and is a predetermined angle
The outer surface of the unidirectional surface texture of orientation;
One annular slot, it is formed between described interior cylinder and the described outer cylinder, and has predetermined gap; And lubricant oil, it is filled in the described annular slot;
Wherein, described interior cylinder rotates along a direction that makes described lubricating oil meet laminar condition.
2. Driven by Coaxial assembly as claimed in claim 1, wherein, the described gap of described annular slot is selected in the scope of about 5.0mm at about 0.5mm.
3. Driven by Coaxial assembly as claimed in claim 2, wherein, the described gap of described annular slot is selected in the scope of about 3.5mm at about 2.5mm.
4. coaxial drum driving assembly as claimed in claim 1, wherein, described interior cylinder is solid.
5. coaxial drum driving assembly as claimed in claim 4, wherein, described lubricant oil enters described annular gap near an end of described coaxial cylinder.
6. coaxial drum driving assembly as claimed in claim 1, wherein, described interior cylinder is hollow and has cylindrical wall.
7. coaxial drum driving assembly as claimed in claim 6, wherein, a plurality of holes that got out on the described cylindrical wall of described lubricant oil by cylinder in described enter it and hollowly enter into described annular gap.
8. coaxial drum driving assembly as claimed in claim 1, wherein, described outer cylinder is fixed.
9. coaxial drum driving assembly as claimed in claim 1, wherein, described outer cylinder rotates.
10. coaxial drum driving assembly as claimed in claim 1, wherein, the described unidirectional surface texture of described interior cylinder is the angle that has greater than about 90 degree
Forward texture.
11. coaxial drum driving assembly as claimed in claim 1, wherein, the described unidirectional surface texture of described interior cylinder is the angle that has less than about 90 degree
Back to texture.
12. coaxial drum driving assembly as claimed in claim 1, wherein, the described unidirectional surface texture on the described interior cylinder is the angles with about 90 degree
The Vertical direction texture.
13. coaxial drum driving assembly as claimed in claim 1, wherein, the described internal surface of described outer cylinder and described in the described outer surface of cylinder have about 0.5 micron average surface roughness (R to about 5.0 micrometer ranges
a).
14. coaxial drum driving assembly as claimed in claim 13, wherein, the described internal surface of described outer cylinder has about 1.0 microns average surface roughness (R to about 1.6 micrometer ranges
a).
15. coaxial drum driving assembly as claimed in claim 13, wherein, described in the described outer surface of cylinder have about 0.8 micron average surface roughness (R to about 2.5 micrometer ranges
a).
16. a coaxial drum driving assembly that is used in the industrial machinery through-put power, described Driven by Coaxial assembly comprises:
One front portion;
One rear portion;
Substantially pass the outer cylinder of a hollow at described front portion and described rear portion, the outer cylinder of described hollow comprises the internal surface with two-way surface texture;
Substantially pass described front portion and described rear portion one in cylinder, described in cylinder comprise having and be predetermined angle along described drum length
The outer surface of the unidirectional surface texture of orientation;
One annular slot, it is formed between described outer cylinder and the described interior cylinder; And
Lubricant oil, it is filled in the described annular slot;
Wherein, described interior cylinder is a direction rotation of laminar flow situation making described lubricating oil; And
Wherein, between described front portion and the described rear portion distribution of lubricant oil according to a predetermined D
F/ D
RRatio is determined.
17. coaxial drum driving assembly as claimed in claim 16, wherein, the described angle of the unidirectional surface texture of described interior cylinder
Be about 90 degree.
18. coaxial drum driving assembly as claimed in claim 17, wherein, described D
F/ D
RRatio is 0.7.
19. coaxial drum driving assembly as claimed in claim 16, wherein, described outer cylinder with described in rotate on the similarity direction that rotates of cylinder.
20. coaxial drum driving assembly as claimed in claim 19, wherein, the described angle of the described unidirectional surface texture of described interior cylinder
For spending less than about 90.
21. coaxial drum driving assembly as claimed in claim 20, wherein, described D
F/ D
RRatio is between about 0.3 to about 0.5.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US2008/008276 WO2010002369A1 (en) | 2008-07-03 | 2008-07-03 | Annular flow distribution control of lubrication oil between concentric rotary shafts |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102057137A true CN102057137A (en) | 2011-05-11 |
| CN102057137B CN102057137B (en) | 2015-08-19 |
Family
ID=41466231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200880129733.8A Expired - Fee Related CN102057137B (en) | 2008-07-03 | 2008-07-03 | Lubricating oil circulation distributed controll between coaxial rotating axle |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US8657689B2 (en) |
| EP (1) | EP2310640B1 (en) |
| CN (1) | CN102057137B (en) |
| BR (1) | BRPI0822873A2 (en) |
| WO (1) | WO2010002369A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104960877A (en) * | 2015-06-30 | 2015-10-07 | 嘉善星窑新型建材有限公司 | Clay bar conveying device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8172716B2 (en) * | 2009-06-25 | 2012-05-08 | United Technologies Corporation | Epicyclic gear system with superfinished journal bearing |
| US10434572B2 (en) * | 2013-12-19 | 2019-10-08 | Arcam Ab | Method for additive manufacturing |
| US10473206B2 (en) | 2015-07-02 | 2019-11-12 | Deere & Company | Transmission vent |
| CN107764981A (en) * | 2017-09-29 | 2018-03-06 | 西南石油大学 | A kind of profit annular flow generation and liquid holdup measurement visualization device and method |
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- 2008-07-03 BR BRPI0822873-6A patent/BRPI0822873A2/en not_active IP Right Cessation
- 2008-07-03 CN CN200880129733.8A patent/CN102057137B/en not_active Expired - Fee Related
- 2008-07-03 US US12/999,656 patent/US8657689B2/en active Active
- 2008-07-03 WO PCT/US2008/008276 patent/WO2010002369A1/en active Application Filing
- 2008-07-03 EP EP08814038.9A patent/EP2310640B1/en not_active Not-in-force
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| US4440118A (en) * | 1980-05-13 | 1984-04-03 | Cummins Engine Company, Inc. | Oil cooled internal combustion engine |
| US4453784A (en) * | 1983-05-02 | 1984-06-12 | United Technologies Corporation | Means for feeding oil between counterrotating shafts |
| US4615414A (en) * | 1984-05-04 | 1986-10-07 | Flores Agell Jose L | Automatic lubricating device for machine shafts |
| US4967863A (en) * | 1987-05-15 | 1990-11-06 | Deere & Company | Compact combine drive system |
| US5375564A (en) * | 1989-06-12 | 1994-12-27 | Gail; Josef | Rotating cylinder internal combustion engine |
| US5529027A (en) * | 1993-10-12 | 1996-06-25 | Yamaha Hatsudoki Kabushiki Kaisha | Liquid-cooled internal combustion engine |
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| CN104960877B (en) * | 2015-06-30 | 2017-01-25 | 嘉善星窑新型建材有限公司 | Clay bar conveying device |
Also Published As
| Publication number | Publication date |
|---|---|
| US20120010003A1 (en) | 2012-01-12 |
| US8657689B2 (en) | 2014-02-25 |
| EP2310640A4 (en) | 2016-01-13 |
| CN102057137B (en) | 2015-08-19 |
| WO2010002369A1 (en) | 2010-01-07 |
| EP2310640B1 (en) | 2018-08-15 |
| BRPI0822873A2 (en) | 2015-06-30 |
| EP2310640A1 (en) | 2011-04-20 |
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